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http://hdl.handle.net/2445/12478Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Mazzitelli, Francisco D. | cat |
| dc.contributor.author | Russo, J. G. (Jorge Guillermo) | cat |
| dc.date.accessioned | 2010-05-06T12:06:23Z | - |
| dc.date.available | 2010-05-06T12:06:23Z | - |
| dc.date.issued | 1993 | cat |
| dc.identifier.issn | 0556-2821 | cat |
| dc.identifier.uri | http://hdl.handle.net/2445/12478 | - |
| dc.description.abstract | We consider a renormalizable two-dimensional model of dilaton gravity coupled to a set of conformal fields as a toy model for quantum cosmology. We discuss the cosmological solutions of the model and study the effect of including the back reaction due to quantum corrections. As a result, when the matter density is below some threshold new singularities form in a weak-coupling region, which suggests that they will not be removed in the full quantum theory. We also solve the Wheeler-DeWitt equation. Depending on the quantum state of the Universe, the singularities may appear in a quantum region where the wave function is not oscillatory, i.e., when there is not a well-defined notion of classical spacetime. | eng |
| dc.format.extent | 8 p. | cat |
| dc.format.mimetype | application/pdf | eng |
| dc.language.iso | eng | eng |
| dc.publisher | The American Physical Society | eng |
| dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.47.4490 | cat |
| dc.relation.ispartof | Physical Review D, 1993, vol. 47, núm. 10, p. 4490-4497 | cat |
| dc.relation.uri | http://dx.doi.org/10.1103/PhysRevD.47.4490 | - |
| dc.rights | (c) The American Physical Society, 1993 | eng |
| dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
| dc.subject.classification | General relativity (Physics) | cat |
| dc.subject.classification | Gravitació | cat |
| dc.subject.classification | Matèria interstel·lar | cat |
| dc.subject.classification | Cosmologia | cat |
| dc.subject.other | Relativitat general (Física) | eng |
| dc.subject.other | Gravitation | eng |
| dc.subject.other | Interstellar matter | eng |
| dc.subject.other | Cosmology | eng |
| dc.title | Dilaton quantum cosmology in two dimensions | eng |
| dc.type | info:eu-repo/semantics/article | eng |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.identifier.idgrec | 512127 | cat |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 512127.pdf | 1.15 MB | Adobe PDF | View/Open |
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